Changelog for wumpus-core-0.22.0

0.21.0 to 0.22.0:
* Moved the deprecated module @Wumpus.Extra.PictureLanguage@
into the package Wumpus-Basic along with the example
@Picture.hs@.
* Added vec as a synonym for the constructor V2.
* Changed some of the Core.FontSize to use better terminology.
Thus some of the constants have changed. Added a new example
@FontMetrics.hs@ to illustrate how FontSize works.
Particularly, the function @capHeight@ has been replaced with
the function @numeralHeight@ which has better semantics.
* The CTM data type and ToCTM class are now hidden in the
top-level import module @Wumpus.Core@. They can be accessed
by importing @Wumpus.Core.GraphicsState@ directly.
* Exposed the PSUnit type class.
0.20.0 to 0.21.0:
* Removed the Primitive instances of the Affine transformation
classes. They have been replaced with special transformation
functions: @rotatePrimitive@, @scalePrimitive@,
@translatePrimitive@. As Primitives are not in an affine
frame until they are lifted to Pictures the affine instances
had ill-conceived semantics.
* Due to changes to accommodate the new non-affine
transformations, many of the class obligations have changed
on the @unit@ of Pictures, Primitives, Bounding Boxes etc.
Generally many class contexts that previously required
Fractional and Ord on the unit have changed to Real and
Floating.
* Removed demo/AffineTest04.hs - there is no longer a
@rotateAbout@ operation on Primitives as they do not exist
in an affine frame until they they are lifted to Pictures.
Added - Scaled.hs, Rotated.hs, Translated,hs.
* Removed the UndecidableInstances pragma from
Core.PictureInternal. It looks like Core.Geometry will always
needs UndecidableInstances though.
* Removed the Ord superclass constriant from the @Stroke@ and
@Fill@ classes and derived operations (e.g. @zostroke@).
0.19.0 to 0.20.0:
* Removed the modules:
(1) Wumpus.Extra.SafeFonts
(2) Wumpus.Extra.SVGColours@
(3) Wumpus.Extra.X11Colours
- they are now in the package @wumpus-basic@.
* Removed the example FontPic.hs to @wumpus-basic@.
* Renamed some functions in Core.BoundingBox:
(1) @trace@ changed to @traceBoundary@, (2) @retrace@
changed to @retraceBoundary@.
* Fixed bug with @picOver@, previously the zorder was wrong
and the function was actually working as /picUnder/.
* Added @capHeight@ to FontSize - get the size of an upper
case letter without ascenders of descenders.
* Guide updated regarding the new package @wumpus-basic@.
0.18.0 to 0.19.0:
* Added @Transform@ type class to apply a matrix transformation
directly.
* Changed the ordering of picture drawing in PostScript and SVG
output so the list gets drawn from tail to head with right
folds. This makes the list order of pictures match their
zorder.
* Renamed the function @withinBB@ (Core.BoundingBox) to
@within@.
* On many type signatures with e.g. Points, I\'ve changed the
parameter name on the type constructor from @a@ to @u@.
This is to indicate that @u@ is some unit - almost always a
Double. e.g @Point2 a@ becomes @Point2 u@ and all the class
obligations change lexically as well @Floating a =>@ to
@Floating u =>@. Superficially this means a lot of type
signatures have diffs but haven\'t really changed.
* Added function @bezierCircle@ to generate the Bezier curve
points for arcs describing a circle.
* Added new demo - MultiPic. The PostScript it generates
is efficient - no extraneous use of @concat@.
* Added wumpus_default_font constant.
0.17.0 to 0.18.0:
* Added instances of the affine operation classes (Scale,
Rotate ...) for Primitives (path, text label, ellipse).
* Added some picture composition functions to Core.Picture.
These are useful for testing where the type class
complications of Extra.PictureLanguage are an overhead.
* Added iRGB to Core.Colour - create RGB colours with
integer components [0..255] - and iHSB, iGrey.
* Added some test modules for the affine transformations.
These illustrate a quirk in Wumpus where, under affine
transformation, Pictures may generate a larger bounding box
than composite primitives.
* Minor change - ztextlabal changed to use 24pt type rather
than 12pt.
* Corrected the cabal file to include the correct files for
the manual. The Haskell source file @WorldFrame.hs@ was
missing with the generated file @WorldFrame.eps@ incorrectly
included instead.
0.16.0 to 0.17.0:
* Added Core.WumpusTypes to export opaque versions of
datatypes from Core.PictureInternal. This should make
the Haddock documentation more cohesive.
* Moved the Core.PictureLanguage module into the Extra
namespace (Extra.PictureLanguage). This module may change
in detail, if not in spirit in the future as I'm not
very happy with it. Also this module is somewhat
\"higher-level\" than the modules in wumpus-core, so
a different home seems fitting.
* Removed CardinalPoint and boundaryPoint from BoundingBox.
* Argument order of 'textlabel' and 'ztextlabel' changed so
that Point2 is the last argument.
* PathSegment constructor names changed - this is an internal
change as the constructors are not exported.
* Primitive type changed - moved Ellipse properties into
PrimEllipse type - internal change.
* Removed dependency on \'old-time\'.
0.15.0 to 0.16.0:
* Additions to Core.Geometry (direction, pvec, vangle,
circularModulo).
* Fixed error with langle due to not accounting for circle
quadrants in Core.Geometry.
* Point2 now derives Ord - so it can be used as a key for
Data.Map.
* Added escape-character handling to text output in PostScript.
This was causing a nasty bug where a drawing would completely
fail when special chars shown (GhostView gives little hint of
what is wrong when such errors are present).
* Changed BoundingBox operation 'corners' to return a 4-tuple
rather than a list.
* Added centeredAt to PictureLanguage
0.14.0 to 0.15.0:
* Added Named colours and "safe fonts" from wumpus-extra.
* Added wumpus_core_version to track version number.
0.13.1 to 0.14.0:
* Added draft user guide.
* Argument order changed for @ellipse@ and @zellispe@ in
Wumpus.Core.Picture.
* Removed dependency on Data.Aviary.
* Removed DList dependency.
0.13.0 to 0.13.1:
* Wumpus.Core.SVG changed path_s to path_c - \'S\' was the
wrongSVG command to match PostScript\'s @curveto@.
0.12.0 to 0.13.0:
* More Haddock documenting.
* @lowerLeftUpperRight@ removed from "Wumpus.Core.BoundingBox".
* Added range checking and Ord obligation t to the @bbox@
\'smart\' constructor.
* Numeric instances for "Wumpus.Core.Colour" improved.
* MatrixMult type class simplified
* Dash Pattern made a list of on-off pairs rather than just a
list
* The modules - Wumpus.Core.PictureInternal, Wumpus.Core.PostScript,
Wumpus.Core.SVG & Wumpus.Core.Utils - are no longer exposed.
* Various operators in "Wumpus.Core.PictureLanguage" changed.
* Wumpus.Core.TextEncoding split into an internal and a public
module (internal - Wumpus.Core.TextEncodingInternal, public -
Wumpus.Core.TextEncoder).